A Potter Valley woman wounded herself and a man July 3 while attempting to kill mice with a .44-caliber Magnum revolver, according to the Mendocino County Sheriff's Office.

The woman, 43, had drawn the gun from a holster under her left arm, intending to shoot mice scurrying across the floor of a small travel trailer on Highway 20 in Potter Valley, according to the Sheriff's Office.

The revolver instead slipped from her hand and fired as it struck the floor, according to the Sheriff's Office.

The bullet went through the woman's right kneecap, then hit keys hanging on the belt loop of a 42-year-old man in the trailer, officials said. The bullet glanced off the keys and tore a hole in the man's pants.

The bullet grazed the man's groin before stopping in his coin pocket, where it was recovered for evidence, according to the Sheriff's Office.